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Heavy Snow in Northeast Mountains, Washington

Heavy Snow February 22, 2013 – February 23, 2013 · Northeast Mountains, Washington

1
Death
$25K
Damage as recorded

What the National Weather Service wrote

Forty-nine Degrees North Ski Resort received nine inches of snow while Mount Spokane reported twelve inches from the storm. Numerous valley locations including Clayton, Sacheen Lake, and Elk reported between one and three inches and mainly on grassy surfaces. The exception was along roadways which climbed above elevations of 2300 feet. Under a heavier snow shower, roughly half an inch of slushy snow accumulated along a small section of US 395 resulting in a brief period of slick driving conditions. A driver heading northbound on US 395 lost control of his car and crossed the center line, striking a second vehicle resulting in one fatality.

The wider storm

A potent and moist Pacific storm system slammed into the Inland Northwest from the afternoon hours of February 22nd through midday on the 23rd. A combination of moist isentropic ascent coupled with strong orographic flow resulted in heavy mountain snow across the mountains of Eastern Washington. Snow levels started off near valley floors but eventually rose near 3000 feet as warmer air punched into the region. Valley locations across Northeastern Washington received between one to three inches of snow while eight to twelve inches fell in the mountains.

Source: NOAA Storm Events Database, event 432073. Narratives are written by the National Weather Service forecast office that issued the report.

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